Read the TL so far and I love it! Latin America really needs more love here. Some questions:
Thanks! I've enjoyed the notifications from your binge reading, glad you loved it!
Why wasn't there some sort of attempt back then to get Chile to join the United Provinces?
Chile was not governed from Buenos Aires, and the United Provinces had enough trouble keeping what it theoretically "inherited" from the viceroyalty as it was (it didn't come up again beyond the Luso-Platinean war, but Paraguay's relationship with Buenos Aires was tenuous for decades). Beyond the lack of a claim to it, there were two other reasons: solidarity, as Platinean volunteers have been fighting in Chile pretty much from the beginning of the war, and the fact that an invasion would be prohibitively expensive and unlikely to succeed (keep in mind that Chile's navy is of comparable size, while its small army is bolstered by having the Andes as a natural barrier).
How did the UP keep the Malvinas? Like was Britain ok with it? The British didn't make any moves there? And if they did what did the UP have to do to get it? And what about the South Sandwich Islands?
The UK took the Malvinas in 1833 IOTL; ITTL, the country is stable and at peace (and has a vested interest in maintaining a naval presence in the South Atlantic), so the Platinean base is larger and more permanent. British ships come and go freely from Platinean ports, and there simply isn't a
need to take it from Buenos Aires. AFAICT, the South Sandwich Islands are more or less uninhabitable, so I'm not sure what to do with them - the easy answer is that they're administered as part of the Malvinas, but I don't know if they were part of the cession Buenos Aires/Argentina inherited from Spain.
Does the way the Spanish Americas gain their independence impact Spain differently? Especially since it looks like they took an even bigger L than OTL?
Spain has a really bad 19th century ITTL, there's no doubt about it. I daresay there's a strong chance it's a Republic by this point, though Spain's fate is a bit nebulous in my notes.
Does Colombia try to invade Cuba or Puerto Rico?
It might invade Puerto Rico, but it does not so much "invade" Cuba as support its local revolutionaries.
How does Bolivar not screw things up and cause his country to break up?
A shorter war is a big part of it, his attention isn't as focused on southern Perú with the Spanish expelled earlier. There is an element of handwaviness to it though, as I realized only too late that - absent changes in the trajectory of
New Granada's revolution - the Gran Colombian experiment was likely doomed.
Does Central America stay together somehow?
It does, mostly predicated on the belief that an earlier end to the Wars of Latin American independence might bring wider stability, considering how damaging the later years of the wars were for the region. This has
fascinating ramification for the late 19th and early 20th century, as there are now two prime locations for a canal.
Does Napoleon III try to instate a Habsburg in Mexico this time?
There is no Mexican adventure for Napoleon III ITTL, which is for the best for everyone involved IMO.
Why is there no movement to change the UP's name to Argentina this time?
Well, the country is likely called Argentina often informally, in the same way that the United States are frequently called America. But the country's formal name as established in 1811 (and the same is technically true for Argentina IOTL prior to the 1819 collapse of the national government established in the Revolution) is the United Provinces of the River Plate, so it is officially known as the United Provinces and its most common patronymic is "platinean". Another way to think of it is in terms of the United Kingdom, with Argentina playing a similar role to England: it may occasionally be used interchangeably, but this would understandably upset residents of not!Argentina (Bolivia/Castellia, Paraguay and Uruguay) who are
also inheritors of viceroyal institutions.
Is blanqueamiento a thing in the UP?
Colorism is probably rampant in the UP, yeah. There are parts of the country where it's a lot less of a problem, but it's likely still a big filter for the leap to national politics or fame.
Will we hear about a certain military officer in the UP who in OTL had a certain ideology named after him that OTL Argentine politicians stick a lot to these days?
Nah, he's safely butterflied away so far past the POD. There may be a similar political movement, but only to the extent that peronism was a local version of a broader, global strain of authoritarian thought.
How will coca fair in this TL? Will cocaine be a thing?
Coca is more widespread in the UP ITTL, and chewing coca is especially common in the armed forces. It's not
quite as widespread as, say, mate, but it's relatively well known in most major cities in the country. Cocaine will likely still develop ITTL, though the UP's relationship with the narcotic will probably be unusual.
Why has the conflict in Peru grind to a halt? Won't there be anyone trying to start shit again?
The conflict in Perú ground to a halt in the 1830s because of the parity between forces and the difficult terrain. By the time the rest of the native-heavy interior falls to the Incan monarchy, the primarily criollo coast is more than happy to get them off their hands. It remains a source of tension, but their interests have diverged since their split.
Has Brazil seriously considered fighting the UP again or no?
The 1819 defeat was pretty humbling for its aims, and it also robbed it of its best base for operations along the Uruguay river - a necessity for any operations beyond the range of the Brazilian fleet. The vast majority of the UP-Brazil border is inhospitable jungle, and the border in the Misiones region has been shifted towards the wooded highlands. It is an all around tougher nut to crack than OTL.
What is the US's relations like with the UP, Colombia, and other South American nations?
Mostly cordial, especially as the USA's expansionism and imperialism is tempered by the fallout of the failed conquest of Texas. Colombia and the US compete occasionally over the Caribbean, but otherwise Bogotá is Washington, DC's favorite interlocutor for Latin America. UP is more closely aligned with the UK, but it has pretty deep economic ties to the US all the same, especially financial.